CROC Greenion Iron repairs and conditions hair while styling. This straightening tool produces negative ions, which allows heat to penetrate to the cortex of hair reducing damage and leaving hair healthy and smooth from the inside out. The Greenion™ Flat Iron is a part of our eco-friendly collection, with static-free, CO²-free styling and professional components. These special features are what makes this flat iron a part of the Greenion™ Collection.